Log Message:
git: updated to 2.52.2

Git 2.25.2 Release Notes
========================

Fixes since v2.25.1
-------------------

 * Minor bugfixes to "git add -i" that has recently been rewritten in C.

 * An earlier update to show the location of working tree in the error
   message did not consider the possibility that a git command may be
   run in a bare repository, which has been corrected.

 * The "--recurse-submodules" option of various subcommands did not
   work well when run in an alternate worktree, which has been
   corrected.

 * Running "git rm" on a submodule failed unnecessarily when
   .gitmodules is only cache-dirty, which has been corrected.

 * "git rebase -i" identifies existing commits in its todo file with
   their abbreviated object name, which could become ambigous as it
   goes to create new commits, and has a mechanism to avoid ambiguity
   in the main part of its execution.  A few other cases however were
   not covered by the protection against ambiguity, which has been
   corrected.

 * The index-pack code now diagnoses a bad input packstream that
   records the same object twice when it is used as delta base; the
   code used to declare a software bug when encountering such an
   input, but it is an input error.

 * The code to automatically shrink the fan-out in the notes tree had
   an off-by-one bug, which has been killed.

 * "git check-ignore" did not work when the given path is explicitly
   marked as not ignored with a negative entry in the .gitignore file.

 * The merge-recursive machinery failed to refresh the cache entry for
   a merge result in a couple of places, resulting in an unnecessary
   merge failure, which has been fixed.

 * Fix for a bug revealed by a recent change to make the protocol v2
   the default.

 * "git merge signed-tag" while lacking the public key started to say
   "No signature", which was utterly wrong.  This regression has been
   reverted.

 * MinGW's poll() emulation has been improved.

 * "git show" and others gave an object name in raw format in its
   error output, which has been corrected to give it in hex.

 * Both "git ls-remote -h" and "git grep -h" give short \ 
usage help,
   like any other Git subcommand, but it is not unreasonable to expect
   that the former would behave the same as "git ls-remote --head"
   (there is no other sensible behaviour for the latter).  The
   documentation has been updated in an attempt to clarify this.

Also contains various documentation updates, code clean-ups and minor fixups.